Transformer crane



Feb. 6, 1923. 1,444,746.

H. L. McDONALD. Q 4

TRANSFORMER CRANE.

FILED 'JAN; 14. 1921.

Patented Feb. 6, 1923.

oic.

HARRY L. MCDONALD, OF EVELETI-I, MINNESOTA.

TRANSFORMER CRANE.

Application filed January 14, 1921.

To all whom it may concern: 7

Be it known that I, HARRY L. MCDONALD, a citizen of the United States,residing at Eveleth, in the county of St. Louis and State of Minnesota,have invented a new and useful Transformer Crane, of which the followingis a specification.

This invention aims to provide a simple bracket adapted to be used forraising transformers on poles, and for other purposes, the constructionbeing such that the bracket is strong, inexpensive to manufacture andcapable of ready adjustment.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the inventionapperta-ins.

I do not bind myself to the specific form shown and described, since,within the scope of what is claimed, a mechanic may work changes withoutdeparting from the spirit of the invention.

In the drawings :Figure 1 shows in. top plan, a device constructed inaccordance with the invention, the pole or support appearing in section;Figure 2 is a side elevation of the bracket, the binding chain be ingremoved; Figure 3 is a front elevation of the bracket; Figure 4 is across section on the line 1-4: of Figure 2.

The device comprises a body 1 and an arm 2 outstanding from. the body atright angles thereto. Both the body and the arm are T-shaped in crosssection, the body including a web 3 and a flange 4, the arm including aweb 5 and a. flange 6. Where the flanges i and 6 join, the bracket isconvened as indicated at 7. Support-engaging elements 8 (prongs) projectrearwardly from the flange i of the body 1. The flange 6 and the web 5of the arm 2 merge into a suspension element 9, which may be a hook.

A member 10 in the form of a plate is superposed on the flange 6 of thearm 2 and is connected thereto by securing devices 11. At its rear end,the plate 10 is bifurcated to form laterally extended fingers 12 and14c. The finger 12 has an opening 15, the finger 14 terminating in agrip 16, which may be a claw. One end of a flexible ele- Serial N0.437,294.

ment 17 (chain) is mounted in the openmg; 15. A brace 18 extends betweenthe web 5 of the arm 2 and the web 3 of the body 1, the ends of thebrace being welded to the webs, if considered expedient.

The chain 17 is placed around. a pole 19 or other support, the chainbeing engaged detachably with the grip 16. The body 1 bears against thepole 19, the prongs 8 entering the pole and taking practically all ofthe weight off the chain 17. Clearly, a transformer or other object maybe raised by tackle suspended from the member 9. When it is desired toadjust the bracket vertically the body 1 may be swung outwardly itslower end, away from the pole 19, thus slacking the chain 17. After thedesired adjustment has been made, the body 1 may be swung downwardlyagainst the pole, the prongs 8 entering the pole as soon as weight isapplied to the hook 9. The convexity at 7 forms a rocker on which thebracket may be swung as aforesaid, and because the arms 12 and 14diverge, the rocker at 7 is permitted to come into contact with the pole19.

I claim.

A device of the class described comprising a body and an outstanding armdisposed substantially at right angles to the body, each being T-shapedin cross section and including a web and a flange, the flanges of thebody and the arm being curved, Where the body joins the arm, to form aconvened rocker, the web and the flange of the arm merging into asuspension element; a brace extended between the web of the arm and theweb of the body;

a member superposed on the flange of the arm, said member beingbifurcated at its rear end to form diverging fingers which projectlaterally beyond the flange of the arm, one finger being provided with agrip; means for securing said member to the flange of the arm; and aflexible element attached to the other finger and detachably engageablewith the grip.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature.

HARRY L. MoDONALD.

